Category Listing - Explorer View (trivial question

Hi,

Really trivial question...

I've only just started config on a shop with the business edition.

This morning when I added categories it was via an excellent explorer type display where I could press the + and - buttons to expand and shrink sub categories. This afternoon went back in (sure to the same place) and the display is different - no explorer window to the left.

The only thing I can think of that I changed was adding a default image in System/Configuration/Files - I've removed this but the nice explorer view hasn't come back.

What have I done?

Tony

Solved

My fault - I had changed system/configuration/display/categories explorer to off.

I had assumed this was a client side thing.

Tony